Srping Boot使用redis缓存

引入依赖：

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

redis配置：

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.database=0

然后配置缓存CacheManager：

package com.api.core.config;

import java.time.Duration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.cache.CacheManager;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.cache.interceptor.SimpleKeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;

/**
 * 缓存配置
 */
@Configuration
public class CacheConfig {

	private static final Logger LOGGER = LoggerFactory.getLogger(CacheConfig.class);
	
	@Bean
	public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
		LOGGER.info("初始化CacheManager");
		RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
		config = config
//			.serializeKeysWith(null) // key 序列化
//			.serializeValuesWith(null) // value 序列化
			.entryTtl(Duration.ofMinutes(30)) // 设置过期时间
			.disableCachingNullValues(); // 不缓存空值，如果出现null会抛异常
		// 初始化缓存配置
		Set<String> caches = new HashSet<>();
		caches.add("cache-key-1");
		caches.add("cache-key-2");
		// 缓存设置
		Map<String, RedisCacheConfiguration> cacheConfigs = new HashMap<>();
		cacheConfigs.put("cache-key-1", config);
		cacheConfigs.put("cache-key-2", config);
		// 创建缓存
		RedisCacheManager cacheManager = RedisCacheManager.builder(connectionFactory)
			.initialCacheNames(caches)
			.withInitialCacheConfigurations(cacheConfigs)
			.build();
		return cacheManager;
	}

	@Bean
	public KeyGenerator keyGenerator() {
		LOGGER.info("初始化KeyGenerator");
		return new SimpleKeyGenerator();
	}

}

然后就可以使用@Cacheable等注解了。